#include <vector>
#include <string>
#include <iostream>
#include <fstream>
#include <cmath>
#include <algorithm>

double expavg(const std::vector<double> &values, int start, int n) 
{
    double a = 1 - 2./(n + 1);

    double nominator = 0., denominator = 0.;
    double b = 1.;

    for (int i = 0; i < n; i++) {
        nominator += b*values[start - i];
        denominator += b;

        b *= a;
    }

    return nominator / denominator;
}

int main(int argc, char **argv)
{
    int low = 12, high = 26, s = 9;

    if (argc >= 2) 
        low = std::atoi(argv[2]);

    if (argc >= 3) 
        high = std::atoi(argv[4]);

    if (argc >= 4) 
        s = std::atoi(argv[3]);

    std::vector<double> prices;
    double price;

    while (std::cin >> price) {
        prices.push_back(price);
    }

    std::vector<double> macd(prices.size());
    std::vector<double> signal(prices.size());

    for (int i = 0; i < prices.size(); ++i) {
        macd[i]   = expavg(prices, i, std::min(i, low)) - expavg(prices, i, std::min(i, high));
        signal[i] = expavg(macd, i, std::min(i, s));
    }

    std::cout << "price,macd,signal,delta" << std::endl;
    for (int i = 1; i < prices.size(); ++i) {
        std::cout << prices[i] << "," << macd[i] << "," << signal[i] << "," << prices[i] - prices[i-1] << std::endl;
    }
}